Unit 1 - Physics of Radiation Therapy

e^-

electron symbol

β^-

electron symbol

⁰₋₁β

electron symbol

-1

charge of electron

e⁺

positron symbol

β⁺

positron symbol

⁰₊₁β

positron symbol

+1

positron charge

p

proton symbol

¹₁p

proton symbol

+1

proton charge

n

neutron symbol

¹₀n

neutron symbol

0

neutron charge

β^- decay (beta minus)

Which mode of decay is most common when there is an excessive number of neutrons?

β⁺ (positron emission) or electron capture

Which mode of decay is most common when there is an excessive number of protons?

meters

unit for wavelength

hertz or s^-1

unit for frequency

C, 3×10⁸

speed of light unit and symbol